Individual provider Active NPI

Omar Al-Shuwaykh, M.D

  • Gastroenterology Physician
  • Walnut Creek, CA
National Provider Identifier
1275967143
Registry record updated Aug 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Gastroenterology PhysicianTaxonomy code 207RG0100X
License
A139572 Issued in CA
Practice address
1425 S Main St
Walnut Creek, CA 94596-5318
Phone
(925) 295-5758
NPI assigned
Aug 28, 2013
Last updated
Aug 13, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Aug 13, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Gastroenterology Physician 207RG0100X A139572 CA Primary

Addresses

Primary practice location

1425 S Main St
Walnut Creek, CA 94596-5318

Mailing address

1425 S Main St
Walnut Creek, CA 94596-5318

Electronic endpoints 1

TypeEndpointUseAffiliation
SOAP URL https://careepicwest.kp.org:14430/Interconnect-prodcalgateway/wcf/epic.community.hite/xcpdrespondinggatewaysync.svc/ncalceq Health Information Exchange (HIE)

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20161018000619 CA Practitioner - HospitalistPractitioner - Internal Medicine 0749578185 Reassigns benefits to 4 organizations

Care Compare profile

Medicare Care Compare
Specialty
HospitalistAlso: Internal Medicine
Education
Other, 2010
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Bass Medical GroupGroup PAC ID 9032111281, 292 clinicians

Practice addresses (Care Compare)

365 Lennon LN
Suite 230
Walnut Creek, CA 94598-5912
Phone (925) 943-4900

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
90.32 of 100Reported as group
Quality
89.54
Promoting interoperability
100
Improvement activities
40
Cost
74.34

Procedures performed for Medicare patients

ProcedureNumber of procedures
Colonoscopy46
Upper gastrointestinal (GI) endoscopy for acid reflux26

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
A139572CAMDGastroenterology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Bass Medical Group CurrentSince Aug 10, 2025 Accepting new patients
John Muir Trauma Physicians Billing Service Hospitalist Current Accepting new patients
Bass Medical Group Current Accepting new patients
Hospitalist Medicine Physicians of California, Inc Internal Medicine CurrentSince Sep 1, 2016 Accepting new patients
Bass Medical Group CurrentSince Aug 10, 2025 Accepting new patients
John Muir Trauma Physicians Billing Service CurrentSince Sep 10, 2018 Accepting new patients
Bass Medical Group Past Accepting new patients

Locations

1505 Saint Alphonsus Way
Alamo, CA 94507
Phone (925) 837-4225

18300 US Highway 18
Apple Valley, CA 92307
Phone (760) 424-2311

2510 Webster St
Berkeley, CA 94705
Phone (510) 548-6555

1200 B Gale Wilson Blvd
Fairfield, CA 94533
Phone (707) 429-3600

1255 Travis Blvd
Fairfield, CA 94533
Phone (707) 425-0623

1220 Rossmoor Pkwy
Walnut Creek, CA 94595
Phone (925) 947-3393

1601 Ygnacio Valley Rd
Walnut Creek, CA 94598
Phone (925) 295-1545

365 Lennon Ln
Ste 230
Walnut Creek, CA 94598
Phone (925) 943-4900

Interoperability endpoints

  • FHIR API: https://fhir4.healow.com/fhir/r4/IBDGCA
  • Direct secure messaging: oalshuwaykh121398@ehr.johnmuirhealth.com
  • Direct secure messaging: oalshuwaykh364294@hisp.ehr.sutterhealth.org

Organizations & group practices 8

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 2

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1377648000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1786579200000",
    "number": "1275967143",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1425 S MAIN ST",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945965318"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1425 S MAIN ST",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945965318",
            "telephone_number": "925-295-5758"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "AL-SHUWAYKH",
        "first_name": "OMAR",
        "credential": "M.D",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2013-08-28",
        "last_updated": "2026-08-13",
        "certification_date": "2026-08-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "CA",
            "license": "A139572",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "SOAP",
            "endpointTypeDescription": "SOAP URL",
            "endpoint": "https://careepicwest.kp.org:14430/Interconnect-prodcalgateway/wcf/epic.community.hite/xcpdrespondinggatewaysync.svc/ncalceq",
            "affiliation": "N",
            "endpointDescription": "Carequality",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "C-CDA",
            "address_1": "1425 S Main St",
            "city": "Walnut Creek",
            "state": "CA",
            "country_code": "US",
            "postal_code": "945965318",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Walnut Creek, CA

Sources for this page

Verify at the official NPI Registry.